I have had to replace old Front and Rear derailuer adjustment Screw/Bolts. Either they were stripped out, bent or just buggered up. Most were mild chromed steel with Prince Point or Phillips heads. I replaced them with Stainless Steel Allen Heads.
Even though I have had no problems with them, it is a Stainless to Alloy (aluminium) junction. That is not necessarily a good thing.
Originally Posted by
veganbikes
...In terms of any metal on metal, you want grease, anti-seize or some sort of mild thread locking compound...